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F. R. SEID'ENSTICKER. Extension Lamp Fixture.

No. 233,879. Patented Nov. 2, 1880.

N.PET5R$, PHOTOUMOGRAPHER, WASI-Immun, D C.

NITED STATES ATENT Fries.

F. ROBERT SEIDENSTICKER, OF WEST MERIDEN, CONN., ASSIGNOR TO THE BRADLEY St HUBBARD MANUFACTURING COMPANY, OF SAME PLACE.

EXTENSION LAM P-FIXTURE.

SPECIFICATION formingpart of Letters Patent No. 233,879-, dated 1\l'overnloerv 2, 1880.

Application filed July 21, 1880.

To all whom it may concern:

Be it known that I, F. ROBERT SEIDEN- STICKER, of West Meriden, in the county ot' New Haven and State of Connecticut, have 5 invented a. new Improvement in Extension Lamp-Fixtures; and I do hereby declare the following, when taken in connection with the accompanying drawings, and the letters of reference marked thereon, to be a full, clear, and

1o exact. description Vof the same, and which said drawings constitute part ot this specitication, and represent, in

Figure 1, a sectional side view, Fig. 2, the shade-holder detached; Fig. 3, a modication of the same.

This invention relates to an improvement in that class ot extension lamp-fixtures in which the shade is made stationary relatively to the lamp fount and burner, so that when the lamp zo is moved up or down the shade moves with it; and particularly to that class in which the arms which support the lamp and connect it with the balancing mechanism above are arranged inside the lamp-shade. In the usual construe tion of this 'last-mentioned class the shade is suspended from a ring at the top, leaving the lower edge entirely exposed and free from any connection with the arms or fixture.

The object ot' this invention is to support the 3o shade from the lower edge, whereby the edge is less exposed and the neck is left free and independent of any supporting device, so that the great variation of temperature at the neck will not cause the shade to break, which is frequently the case in the class of fixtures where the shade is supported at the top; and

the invention consists in the construction asn hereinafter described, and particularly recited in the claims.

A represents the frame. or arms, provided at the center, B, with a device to hold the lampi'ount. The arms extend upward, and are preferably attached to a ring, C, to which the chains D are attached; but they may be attached directly to the end of the arms, and the ring C thereby dispensed with. From each side ofthe frame an arm', E, extends outward, to each ot' which a shade-holder clamp, F, is attached. These shade-holders are preferably made in the form of a segment ot a circle, as seen in Fig. 2, with a 1iange,f, turned upward and inward, as seen in Fig. l, and attached to the arms E by a set-screw, H, through a slot in the arm or in the holder, so that the (No model.)

holders may be moved inward or outward to adapt themselves to varying diameters of shades.

The shade L is of the usual conical shape, arranged outside the frame or supporting-arms, and its lower edge is set into the holder, as seen 6o in Fig. l, and there secured independent ot' the iixture at other points. By this construction there need be no contact of the neck of the shade with metal aboutit; hence the great and sudden change of temperature to which the shade is subjected at the neck finds the shade free to expand or contract at that point, and the shade, being supported at its lower edge, is protected to a great extent from liability of breakage.

The shade-holder may extend to a greater or less extent around the shade, and so as to make an entire protection and support for that edge.

Instead ofvadjustiug by set-screws, as seen in Fig. 1, the holder F may be arranged with a spring, P, the tendency of which is to force the holder inward, butyields for the introduction of the shade. I therefore do not wish to be understood as confining this invention to 8o any particular construction of holders, except that it be a holder which is secured to or extends from the arm within the shade, and so as to engage with or support the shade entirely from the lower edge.

I claiml. In a lamp-fixture in which the fount-supporting arms extend upward within the shade, and which are supported from above, a support for the shade, extending from the lamp- 9o supporting arms outward at the lower edge of the shade, and there provided with a seat to engage the shade and support it entirely by its lower edge, substantially as described.

2. In a lamp-lixture in which the fount-sup- 95 porting arms extend upward within the shade, and which are supported from above, a support for the shade, extending from the lampsupporting arms outwardly, and provided with a seat to receive and hold the shade by its roo .lower edge, such seat being made adjustable horizontally relatively to the diameter of the shade, substantially as described.

F. ROBERT SEIDENSTICKER.

Witnesses F. J. SEIDENsTIcKER, A. M. BROOKS. 

